Nico Ritschel @nicoritschel.com · 15/03/2026Download at mdnb.app or brew install sidequery/tap/mdnb Also compatible with OpenCode, Pi & Codex CLI Installing and removing the agent integrations is as simple as running mdnb install & mdnb uninstallmdnb.appmdnb — A Markdown Notebook for macOSA native macOS notebook app. Your notes are plain Markdown files on disk, yours forever. Free. 240
Nico Ritschel @nicoritschel.com · 15/03/2026Now you can use mdnb as a Claude Code plan editor. Highlight ranges of the plan & leave comments for Claude to address 1101
Nico Ritschel @nicoritschel.com · 28/02/2026(cont) - UI fixes around theming, inline editing, link previews, and sidebar behavior - a new startup screen (seen below) - deeper integration with macOS: Spotlight indexing, Siri integration, mdnb:// url scheme & Applescript support 000
Nico Ritschel @nicoritschel.com · 28/02/2026mdnb is moving so fast that changes can be hard to follow Here's the changelog from the past week: - built-in Git sync with GitHub sign-in - added an integrated terminal - improved folder navigation and editor formatting tools - major performance gains for startup and large note libraries 130
Nico Ritschel @nicoritschel.com · 27/02/2026mdnb.app now has themes, Ghostty terminal built in & an optional formatting bar 020
Nico Ritschel @nicoritschel.com · 19/02/2026I wrote some thoughts on memory in coding agents, a surprisingly neglected area for LLM memory? (Zero AI was used to write the thoughts) 240
Nico Ritschel @nicoritschel.com · 13/02/2026It's been a lot of fun building on automerge from @inkandswitch.com 060
Nico Ritschel @nicoritschel.com · 11/02/2026While this part isn't live yet you can try the restmdnb.appmdnb — A Markdown Notebook for macOSA native macOS notebook app. Your notes are plain Markdown files on disk, yours forever. Free. 000
Nico Ritschel @nicoritschel.com · 10/02/2026I did a whole new site for the umbrella, sidequery.devsidequery.devSidequery — Notebooks for MacSidequery builds native Mac notebooks for SQL, Python, and Markdown. Fast, local, privacy-first. 010
Nico Ritschel @nicoritschel.com · 07/02/2026I built a free, 100% native (for macOS) markdown editor. You can download it heremdnb.appmdnb — A Markdown Notebook for macOSA native macOS notebook app. Your notes are plain Markdown files on disk, yours forever. Free. 1110
Nico Ritschel @nicoritschel.com · 02/02/2026I've been using Claude Code since May & use Codex actively. Here's some of my thoughts on software engineering with AInicoritschel.comWhen Software Engineers Don't Look at the Software 130
Nico Ritschel @nicoritschel.com · 02/02/2026Lets you do multiple things in a git repo in isolation without actually cloning multiple copies 100
Nico Ritschel @nicoritschel.com · 02/02/2026I forked everyone's favorite terminal, Ghostty, and added git worktree support so to better manage parallel AI agentsghostree.devghostree — Worktree-Aware Terminal for GhosttyWorktree-aware terminal management for Ghostty. Switch branches, manage worktrees, and keep your terminal sessions organized. 4386
Nico Ritschel @nicoritschel.com · 27/01/2026tldr.techHow S3 is Built ☁️, Fixing Vendor SQL 🦆, Notebooks Without Setup 🐍How S3 is Built ☁️, Fixing Vendor SQL 🦆, Notebooks Without Setup 🐍 030
Nico Ritschel @nicoritschel.com · 23/01/2026Can you tell me what can be improved with their version management? (I'm building a free alternative that runs on macOS) 200
Nico Ritschel @nicoritschel.com · 23/01/2026What else are their charts missing for you? (I'm building a free desktop alternative for macOS) 100
Nico Ritschel @nicoritschel.com · 23/01/2026Might have snuck in experimental canvas mode too. All from your .py file with # %% cell delimiters 010
Nico Ritschel @nicoritschel.com · 23/01/2026With credentials securely stored in macOS Keychain, of course 🔒 100
Nico Ritschel @nicoritschel.com · 23/01/2026Another day, another release. pynb.app just got native connectivity for Postgres, Snowflake, Bigquery, SQLite & Flight SQL via ADBC (so it's fast and memory efficient) 120
Nico Ritschel @nicoritschel.com · 21/01/2026Toying with canvas mode since I am tracking dependencies for reactivity 😎 010
Nico Ritschel @nicoritschel.com · 21/01/2026Ha thanks! Yeah custom charting is still to come but I wanted to show a baseline jupyter equivalent experience! 000
Nico Ritschel @nicoritschel.com · 21/01/2026Ha, thanks! I have def gotten this feedback.. thinking of leaning into a xxNB brand for a bunch of related products... so like sqlNB, pyNB, mdNB etc. Maybe I should play with capitalization a bit 🤔 110
Nico Ritschel @nicoritschel.com · 20/01/2026Soon; I have something in the works via gpui (UI framework from @zed.dev) 020
Nico Ritschel @nicoritschel.com · 20/01/2026👀 I'm thinking closer to the obsidian model please use it for free! 010
Nico Ritschel @nicoritschel.com · 20/01/2026You can try this out now!pynb.devpynb — Python Notebooks Without the FussPython notebooks without the fuss. Fast, local notebooks for data science and machine learning. Privacy-first. 5150
Nico Ritschel @nicoritschel.com · 20/01/2026pynb.apppynb.apppynb — Python Notebooks Without the FussPython notebooks without the fuss. Fast, local notebooks for data science and machine learning. Privacy-first. 000
Nico Ritschel @nicoritschel.com · 20/01/2026pynb.apppynb.apppynb — Python Notebooks Without the FussPython notebooks without the fuss. Fast, local notebooks for data science and machine learning. Privacy-first. 111
Nico Ritschel @nicoritschel.com · 20/01/2026pynb.apppynb.apppynb — Python Notebooks Without the FussPython notebooks without the fuss. Fast, local notebooks for data science and machine learning. Privacy-first. 000
Nico Ritschel @nicoritschel.com · 19/01/2026I was wondering where all the stars were coming from thanks for the shoutout! 240
Nico Ritschel @nicoritschel.com · 19/01/2026I'm using ipyflow. I like Marimo; we'll see on future compatibility. 020
Nico Ritschel @nicoritschel.com · 18/01/2026Looks like I'm not alone eithergithub.comEnable percent-script and .ipynb formats via pluggable AppFileManagers. · Issue #5318 · marimo-team/marimoDescription It would be extremely useful for Marimo to add support for .ipynb and percent-formatted .py scripts to it's primary edit/run/export commands. This would let data teams with existing not... 030
Nico Ritschel @nicoritschel.com · 18/01/2026I don't *love* any of the alternatives. Not a fan of using JupyterLab. VSCode notebooks are alright though! 030
Nico Ritschel @nicoritschel.com · 18/01/2026I have fondness for the percent format and ipyflow is pretty solid these days!jupytext.readthedocs.ioNotebooks as code — Jupytext documentation 130
